Results 21 to 30 of about 701 (84)
Common fixed point theorems for commuting k‐uniformly Lipschitzian mappings
International Journal of Mathematics and Mathematical Sciences, Volume 25, Issue 3, Page 145-152, 2001., 2001 We give a common fixed point existence theorem for any sequence of commuting k‐uniformly Lipschitzian mappings (eventually, for k = 1 for any sequence of commuting nonexpansive mappings) defined on a bounded and complete metric space (X, d) with uniform normal structure. After that we deduce, by using the Kulesza and Lim (1996), that this result can be
M. Elamrani, A. B. Mbarki, B. Mehdaoui
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Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016 Let K be a non-empty closed subset of a Banach space X endowed with a graph G. We obtain fixed point theorems for nonself G-contractions of Chatterjea type.
Balog Laszlo +2 more
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Fixed points via a generalized local commutativity
International Journal of Mathematics and Mathematical Sciences, Volume 25, Issue 8, Page 497-507, 2001., 2001 Let g : X → X. The concept of a semigroup of maps which is “nearly commutative at g” is introduced. We thereby obtain new fixed point theorems for functions with bounded orbit(s) which generalize a recent theorem by Huang and Hong, and results by Jachymski, Jungck, Ohta, and Nikaido, Rhoades and Watson, and others.
Gerald F. Jungck
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Dynamics and Ulam Stability for Fractional q-Difference Inclusions via Picard Operators Theory
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2021 In this manuscript, by using weakly Picard operators we investigate the Ulam type stability of fractional q-difference An illustrative example is given in the last section.
Abbas Saïd +2 more
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A general existence principle for fixed point theorems in D‐metric spaces
International Journal of Mathematics and Mathematical Sciences, Volume 23, Issue 7, Page 441-448, 2000., 2000 We establish two general principles for fixed point theorems in D‐metric spaces, and then show that several theorems in D‐metric spaces follow as corollaries of these general principles.
B. C. Dhage, A. M. Pathan, B. E. Rhoades
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Qualitative Analysis of Coupled Fractional Differential Equations involving Hilfer Derivative
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2022 In this manuscript, we have studied the coupled system of Hilfer fractional differential equations with non-local conditions. We have used the Leray-alternative Schauder’s and the Contraction principle to obtain the results on the existence and ...
Dhawan Kanika +2 more
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Fixed Point Theorems for Set-Valued Mappings on TVS-Cone Metric Spaces
, 2015 In the context of tvs-cone metric spaces, we prove a Bishop-Phelps and a Caristi's type theorem. These results allow us to prove a fixed point theorem for $(\delta, L)$-weak contraction according to a pseudo Hausdorff metric defined by means of a cone ...
Fierro, Raúl
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Related fixed points for set valued mappings on two metric spaces
International Journal of Mathematics and Mathematical Sciences, Volume 23, Issue 3, Page 205-210, 2000., 2000 Some related fixed points theorems for set valued mappings on two complete and compact metric spaces are proved.
Brian Fisher, Duran Türkoglu
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Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2015 In this paper, by combining a modified extragradient scheme with the viscosity approximation technique, an iterative scheme is developed for computing the common element of the set of fixed points of a sequence of asymptotically nonexpansive mappings and
Petruşel Adrian, Sahu D.R., Sagar Vidya
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A new class of unsaturated mappings: Ćirić-Reich-Rus contractions
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2022 Using the technique of enriching contractive type mappings, we introduce a more general concept of enriched Ćirić-Reich-Rus contraction than the one studied in [Berinde, V.; Păcurar, M.
Berinde Vasile, Păcurar Mădălina
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